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Base 25 to Base 21

Base 25 to Base 21 Converter

Enter a number in base 25 below to convert it to base 21 instantly.

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About These Bases

Base 25

In base 25, each digit position represents a power of 25: the rightmost digit counts individual ones, the next counts groups of 25, the next counts groups of 25×25, and so on — the same place-value idea as base 10, just with 25 distinct digits instead of ten.

Base 21

Base 21 works the same way: the rightmost digit counts ones, the next counts groups of 21, the next counts groups of 21×21, and so on, using 21 distinct digits.

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Quick Reference Table
Base 10 Base 25 Base 21
1 1 1
2 2 2
3 3 3
4 4 4
5 5 5
6 6 6
7 7 7
8 8 8
9 9 9
10 A A
11 B B
12 C C
13 D D
14 E E
15 F F
16 G G
17 H H
18 I I
19 J J
20 K K
21 L 10
22 M 11
23 N 12
24 O 13
25 10 14
26 11 15
27 12 16
28 13 17
29 14 18
30 15 19
31 16 1A
32 17 1B
33 18 1C
34 19 1D
35 1A 1E
36 1B 1F
37 1C 1G
38 1D 1H
39 1E 1I
40 1F 1J
41 1G 1K
42 1H 20
43 1I 21
44 1J 22
45 1K 23
46 1L 24
47 1M 25
48 1N 26
49 1O 27
50 20 28
51 21 29
52 22 2A
53 23 2B
54 24 2C
55 25 2D
56 26 2E
57 27 2F
58 28 2G
59 29 2H
60 2A 2I
61 2B 2J
62 2C 2K
63 2D 30
64 2E 31
70 2K 37
80 35 3H
90 3F 46
100 40 4G
200 80 9B
300 C0 E6
400 G0 J1
500 K0 12H
600 O0 17C
700 130 1C7
800 170 1H2
900 1B0 20I
1000 1F0 25D

View this as a standalone, printable table

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